CN202421317U - Capacitance inductance automatic tester for vehicle loading usage - Google Patents
Capacitance inductance automatic tester for vehicle loading usage Download PDFInfo
- Publication number
- CN202421317U CN202421317U CN2011202696866U CN201120269686U CN202421317U CN 202421317 U CN202421317 U CN 202421317U CN 2011202696866 U CN2011202696866 U CN 2011202696866U CN 201120269686 U CN201120269686 U CN 201120269686U CN 202421317 U CN202421317 U CN 202421317U
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- measurement
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- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 34
- 239000003990 capacitor Substances 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
Provided is a capacitance inductance automatic tester for vehicle loading usage, comprising a master control circuit, a rectification filtering circuit used for converting the input alternating current into the direct current, a voltage stabilizing circuit electrically connected with the output end of the rectification filtering circuit, a voltage switching circuit applied to the tested object, a filter circuit of the voltage and current upon the tested object, an amplification circuit, an adjusting gain circuit, a sampling frequency division circuit, a phase-locked loop circuit, a frequency measuring circuit, an AC synchronization sampling circuit, a signal control circuit, a clock circuit, an input circuit, and an output circuit. The master control circuit is utilized for measuring the current and voltage of the tested object. With this technical scheme, the current measurement adopts a current split-core type meter. The current split-core type meter allows measurement without dismounting. The voltage measuring part utilizes a Hall voltage sensor for measurement. The capacitance inductance automatic tester of the utility model allows the measurement of the installed and non-detachable power capacitance and inductance inside a power station and a transformer station, is applicable to device inspection and overhaul, and finds out faults in time.
Description
Technical field
The utility model relates to a kind of electric capacity, inductance automatic testing equipment; Particularly a kind of The parallel power condenser, inductor of being used for; Not disconnection can be measured single electric capacity wherein, the vehicle mounted capacitor and inductor auto testing instrument of inductance, belongs to the ATE technical field.
Background technology
Vehicle mounted capacitor and inductor auto testing instrument is to be used for instrument that the electric capacitor inductance is measured; Existing method mostly is that single electric capacity, inductance are measured; But along with big electrical network of modern times develops to UHV (ultra-high voltage), high capacity and remote direction, to power system security, stable and economical operation require increasingly high; The large-capacity power electric capacity that uses in the electric system, inductance are also more and more, and test job also increases thereupon.When the power equipment that has put into operation is tested,, generally be its wiring not to be untied or change from security consideration; Therefore need a kind of the instrument of sending out, installing already in the transformer station, non-removable electric capacitor, inductance are measured to be used for inspection, the maintenance of equipment, in time find fault.
The utility model content
The utility model purpose to send out, installed already in the transformer station, non-removable electric capacitor, inductance measure, and requires range for measuring big, the vehicle mounted capacitor and inductor auto testing instrument that its precision is high.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of vehicle mounted capacitor and inductor auto testing instrument comprises main control circuit, is used for mu balanced circuit, the filtering circuit that is added in voltage and current on voltage commutation circuit on the test product, the test product, amplifying circuit, adjusting gain circuitry, frequency dividing circuit, phase-locked loop circuit, frequency measurement circuit, ac synchronous sample circuit, signal control circuit, clock circuit and the input of sampling, output circuit that alternating current with input converts galvanic current rectifying and wave filtering circuit into, is electrically connected with the output terminal of described current rectifying and wave filtering circuit; By main control circuit test product is carried out electric current, voltage measurement; Wherein the electric current split-core type meter is adopted in current measurement, and said voltage measurement part is measured through the Hall voltage sensor.
Preferably, said capacitor and inductor auto testing instrument also is provided with voltage short-circuit protection circuit, overload protecting circuit, wiring error holding circuit.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
Because the employing of technique scheme, wherein the electric current split-core type meter is adopted in current measurement, can realize not dismantling measurement with the electric current split-core type meter; The voltage measurement part is measured through the Hall voltage sensor; Be a kind of the instrument of sending out, installing already in the transformer station, non-removable electric capacitor, inductance are measured to be used for inspection, the maintenance of equipment, in time find fault.
Description of drawings
Accompanying drawing 1 is the electrical principle block diagram of the utility model vehicle mounted capacitor and inductor auto testing instrument;
Accompanying drawing 2 is the utility model vehicle mounted capacitor and inductor auto testing instrument system composition diagram;
Wherein: 1, power module; 2, current signal treatment circuit; 3, electric current, voltage gain control circuit; 4, signal amplification circuit; 5, voltage, electric current synchronized sampling circuit; 6, voltage signal processing circuit; 7, frequency measurement circuit; 8, main control circuit.
Embodiment
Of the present invention a kind of vehicle mounted capacitor and inductor auto testing instrument shown in accompanying drawing 1; Method of testing is by this vehicle mounted capacitor and inductor auto testing instrument tested article voltage signal to be provided; This signal is delivered to main control circuit and is measured (doing introduction again in the concrete measuring process accompanying drawing 2) simultaneously; On test specimen, produce electric current after applying voltage, this current signal is also delivered to main control circuit and is measured, and calculates (but this algorithm filtering harmonic composition) according to measurement data through Fourier algorithm; Draw amplitude and phase angle, draw net result according to following formula.The capacitor and inductor auto testing instrument records the synchronous ac sampled voltage that applies on the electric current that flows through test product, the test product, through Fourier analysis, obtains the amplitude and the phase place of electric current, voltage.Pass through formula:
Z=(| U|/| I|) * (∠ Φ U-∠ Φ I), ZC=R+1/j ω C, ZL=R+j ω L be ω=2 π f wherein, the frequency values of f for measuring, the voltage that applies of this instrument is power-frequency voltage, its frequency is as the criterion with the concrete data of actual measurement.
The test loop of the said vehicle mounted capacitor and inductor auto testing instrument shown in accompanying drawing 2; Power module 1 is the power pack of main control circuit; This part is to give the main control circuit AC signal through the transformer of many windings; Rectification through main control circuit and filtering obtain the spendable analog powers of many groups, the digital power that provides through Switching Power Supply; Current signal treatment circuit 2 is to be clipped in the current signal that obtains on the test product loop by the electric current split-core type meter to deliver to main control circuit 8, carries out signal sampling by main control circuit 8; Because the scope of the test product that will measure is bigger; The variation range that need be added in the voltage and current on the test product is also just bigger, in order to measure accurately, needs the size of conditioning signal; Therefore need electric current, voltage gain control circuit 3, the multiple of this gain is 1-16; Signal amplification circuit 4, this part are realized the amplification of signal and signal are carried out filtering.After the filtering signal is isolated; Signal after the isolation will be gathered; Acquired signal is used synchronized sampling; To guarantee that voltage and current is sampled is not produce phase shift, wherein realizes the sampling time through counter and phaselocked loop, and this partial circuit is voltage, electric current synchronized sampling circuit 5.Voltage signal processing circuit 6 is to measure to be added in the voltage on the test product, and this voltage is input to main control circuit 8, on the main control circuit 8 through behind the Hall voltage sensor its signal being sampled; Frequency measurement circuit 7; This part is the frequency of measuring voltage and current signal; Because it is influential that frequency signal is measured test product equally, this vehicle mounted capacitor and inductor auto testing instrument need be measured the actual frequency that applies, and this signal is also isolated through filtering before measuring.Main control circuit 8 is parts that the signal after the above collection is calculated; Calculating section has adopted Fourier algorithm; Therefore operand is bigger, has adopted dsp chip in order to improve this part of arithmetic speed, and this part has also realized button operation, the demonstration of liquid crystal display and the control of printer.More than be the main composition of this capacitor and inductor auto testing instrument.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
Because the employing of technique scheme, wherein the electric current split-core type meter is adopted in current measurement, can realize not dismantling measurement with the electric current split-core type meter; The voltage measurement part is measured through the Hall voltage sensor; Be a kind of the instrument of sending out, installing already in the transformer station, non-removable electric capacitor, inductance are measured to be used for inspection, the maintenance of equipment, in time find fault.
Below only be the concrete exemplary applications of the utility model, the protection domain of the utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the utility model rights protection scope.
Claims (2)
1. vehicle mounted capacitor and inductor auto testing instrument is characterized in that: comprise main control circuit, be used for mu balanced circuit, the filtering circuit that is added in voltage and current on voltage commutation circuit on the test product, the test product, amplifying circuit, adjusting gain circuitry, frequency dividing circuit, phase-locked loop circuit, frequency measurement circuit, ac synchronous sample circuit, signal control circuit, clock circuit and the input of sampling, output circuit that alternating current with input converts galvanic current rectifying and wave filtering circuit into, is electrically connected with the output terminal of described current rectifying and wave filtering circuit; By main control circuit test product is carried out electric current, voltage measurement; Wherein the electric current split-core type meter is adopted in current measurement; Said voltage measurement part is measured through the Hall voltage sensor.
2. vehicle mounted capacitor and inductor auto testing instrument according to claim 1 is characterized in that: said capacitor and inductor auto testing instrument also is provided with voltage short-circuit protection circuit, overload protecting circuit, wiring error holding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202696866U CN202421317U (en) | 2011-07-27 | 2011-07-27 | Capacitance inductance automatic tester for vehicle loading usage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202696866U CN202421317U (en) | 2011-07-27 | 2011-07-27 | Capacitance inductance automatic tester for vehicle loading usage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421317U true CN202421317U (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202696866U Expired - Fee Related CN202421317U (en) | 2011-07-27 | 2011-07-27 | Capacitance inductance automatic tester for vehicle loading usage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901866A (en) * | 2011-07-27 | 2013-01-30 | 苏州华电电气股份有限公司 | Vehicular automatic capacitance and inductance tester |
-
2011
- 2011-07-27 CN CN2011202696866U patent/CN202421317U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901866A (en) * | 2011-07-27 | 2013-01-30 | 苏州华电电气股份有限公司 | Vehicular automatic capacitance and inductance tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: SUZHOU HUADIAN ELECTRIC CO., LTD. Effective date: 20130514 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215128 SUZHOU, JIANGSU PROVINCE TO: 100031 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130514 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Hegang City Power Bureau Address before: Good East Industrial Park Wuzhong Economic Development Zone Suzhou city Jiangsu province 215128 Pu Road No. 255 Patentee before: Suzhou Huadian Electric Co., Ltd. Patentee before: Hegang City Power Bureau |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20160727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |